Searchable peer-to-peer system through instant messaging based topic indexes

ABSTRACT

An embodiment of the present invention, a computer receives, on a first computer, a request to locate a topic. The computer determines a second computer to query for the topic. The computer queries the second computer for the topic. The computer receives identification information of participants of an instant messaging conversation corresponding to the topic. The computer stores, on the first computer, the identification information of the participants and indexing the stored identification information by the topic.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of U.S. patentapplication Ser. No. 17/182,788, filed on Feb. 23, 2021; whichapplication is a continuation of U.S. patent application Ser. No.16/210,937, filed on Dec. 5, 2018, which is a continuation of U.S.patent application Ser. No. 15/295,666, filed on Oct. 17, 2016, which isa continuation of U.S. patent application Ser. No. 14/073,005, filed onNov. 6, 2013, which application is a continuation of U.S. patentapplication Ser. No. 13/706,794, filed on Dec. 6, 2012, whichapplications are incorporated herein by reference in their entireties.

FIELD OF THE INVENTION

The present invention relates generally to the field of instantmessaging, and more particularly, to accessing information from storedconversations.

BACKGROUND OF THE INVENTION

Instant messaging (IM) is a way of communicating and transferringinformation between computing devices. Particularly in a corporatesetting, instant messaging has become widely used to communicate, viaelectronic messages, in a timely matter. When a typical IM conversationends, a transcript of the conversation may be stored in a file systemlocated on the computer of a participant in the IM conversation. Thisinformation is not readily discovered and accessible by users of othercomputing devices.

An example of a conventional method for retrieving such informationinvolves searching for key words or topics that correspond to an IMconversation stored on a central server. Similarly, in a peer-to-peersetting, one computer may directly query another, using key words,search terms, etc., for a matching IM conversation.

SUMMARY

Embodiments of the present invention disclose a method, computer programproduct, and computer system for searching instant message conversationhistories stored in a local file system of a user based on topicindexes. A computer receives, on a first computer, a request to locate atopic. The computer determines a second computer to query for the topic.The computer queries the second computer for the topic. The computerreceives identification information of participants of an instantmessaging conversation corresponding to the topic. The computer stores,on the first computer, the identification information of theparticipants and indexing the stored identification information by thetopic.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a functional block diagram illustrating a distributed dataprocessing environment, in accordance with an embodiment of the presentinvention.

FIG. 2 is a flowchart depicting operational steps for storing andindexing an instant message conversation, on a computer device withinthe data processing environment, in accordance with an embodiment of theinvention.

FIG. 3 is a flowchart depicting operational steps for an instant messageindex program locating a topic among a network of indexes, on a computerdevice within the data processing environment, in accordance with anembodiment of the invention.

FIG. 4 depicts a block diagram of components of the computer deviceexecuting the instant messaging index program, in accordance with anembodiment of the present invention.

DETAILED DESCRIPTION

As will be appreciated by one skilled in the art, aspects of the presentinvention may be embodied as a system, method or computer programproduct. Accordingly, aspects of the present invention may take the formof an entirely hardware embodiment, an entirely software embodiment(including firmware, resident software, micro-code, etc.) or anembodiment combining software and hardware aspects that may allgenerally be referred to herein as a “circuit,” “module” or “system.”Furthermore, aspects of the present invention may take the form of acomputer program product embodied in one or more computer-readablemedium(s) having computer readable program code/instructions embodiedthereon.

Any combination of computer-readable media may be utilized.Computer-readable media may be a computer-readable signal medium or acomputer-readable storage medium. A computer-readable storage medium maybe, for example, but not limited to, an electronic, magnetic, optical,electromagnetic, infrared, or semiconductor system, apparatus, ordevice, or any suitable combination of the foregoing. More specificexamples (a non-exhaustive list) of a computer-readable storage mediumwould include the following: an electrical connection having one or morewires, a portable computer diskette, a hard disk, a random access memory(RAM), a read-only memory (ROM), an erasable programmable read-onlymemory (EPROM or Flash memory), an optical fiber, a portable compactdisc read-only memory (CD-ROM), an optical storage device, a magneticstorage device, or any suitable combination of the foregoing. In thecontext of this document, a computer-readable storage medium may be anytangible medium that can contain, or store a program for use by or inconnection with an instruction execution system, apparatus, or device.

A computer-readable signal medium may include a propagated data signalwith computer-readable program code embodied therein, for example, inbaseband or as part of a carrier wave. Such a propagated signal may takeany of a variety of forms, including, but not limited to,electro-magnetic, optical, or any suitable combination thereof. Acomputer-readable signal medium may be any computer-readable medium thatis not a computer-readable storage medium and that can communicate,propagate, or transport a program for use by or in connection with aninstruction execution system, apparatus, or device.

Program code embodied on a computer-readable medium may be transmittedusing any appropriate medium, including but not limited to wireless,wireline, optical fiber cable, RF, etc., or any suitable combination ofthe foregoing.

Computer program code for carrying out operations for aspects of thepresent invention may be written in any combination of one or moreprogramming languages, including an object oriented programming languagesuch as Java®, Smalltalk, C++ or the like and conventional proceduralprogramming languages, such as the “C” programming language or similarprogramming languages. The program code may execute entirely on a user'scomputer, partly on the user's computer, as a stand-alone softwarepackage, partly on the user's computer and partly on a remote computeror entirely on the remote computer or server. In the latter scenario,the remote computer may be connected to the user's computer through anytype of network, including a local area network (LAN) or a wide areanetwork (WAN), or the connection may be made to an external computer(for example, through the Internet using an Internet Service Provider).

Aspects of the present invention are described below with reference toflowchart illustrations and/or block diagrams of methods, apparatus(systems) and computer program products according to embodiments of theinvention. It will be understood that each block of the flowchartillustrations and/or block diagrams, and combinations of blocks in theflowchart illustrations and/or block diagrams, can be implemented bycomputer program instructions. These computer program instructions maybe provided to a processor of a general purpose computer, specialpurpose computer, or other programmable data processing apparatus toproduce a machine, such that the instructions, which execute via theprocessor of the computer or other programmable data processingapparatus, create means for implementing the functions/acts specified inthe flowchart and/or block diagram block or blocks.

These computer program instructions may also be stored in acomputer-readable medium that can direct a computer, other programmabledata processing apparatus, or other devices to function in a particularmanner, such that the instructions stored in the computer-readablemedium produce an article of manufacture including instructions whichimplement the function/act specified in the flowchart and/or blockdiagram block or blocks.

The computer program instructions may also be loaded onto a computer,other programmable data processing apparatus, or other devices to causea series of operational steps to be performed on the computer, otherprogrammable apparatus or other devices to produce acomputer-implemented process such that the instructions which execute onthe computer or other programmable apparatus provide processes forimplementing the functions/acts specified in the flowchart and/or blockdiagram block or blocks.

The present invention will now be described in detail with reference tothe Figures. FIG. 1 is a functional block diagram illustrating adistributed data processing environment, designated 100, in accordancewith one embodiment of the present invention.

In this embodiment of the invention, distributed data processingenvironment 100 includes multiple computer devices interconnected overnetwork 101. Network 101 may be any collection of resources, includingcomputers, components, connections, and protocols, that will supportcommunication between computing devices, such as computer devices 102A,102B, 102C, and 102D. Additionally, each computer device has a socialnetwork connection or relationship with at least one other computerdevice. For example, a user of computer device 102A may belong to thesame social network as a user of computer device 102B. In the presentapplication, belonging to the same social network includes being acontact in an Instant Messaging program. As depicted, computer device102A has a social network connection or relationship with computerdevice 102B, represented by connection 104. Thus, a user of computerdevice 102A may have a user of computer device 102B listed as an IMcontact and the user of computer device 102B similarly may have the userof computer device 102A listed as an IM contact. Computer device 102Bhas a social network connection to computer device 102C (connection106), and computer device 102C has a social network connection tocomputer device 102D (connection 108). Each of computer devices 102A,102B, 102C, and 102D may communicate with each other in a peer-to-peer(P2P) environment over network 101, for example, when communicating viaan instant messaging program. Each of computer devices 102A, 102B, 102C,and 102D may be a laptop computer, tablet computer, netbook computer,personal computer (PC), a desktop computer, a personal digitalassistant, a smart phone, or any programmable electronic device capableof participating in instant messaging.

IM index program 110 is a computer program for searching topic based IMconversation indexes in a P2P setting where a user can search for atopic without knowing where the topic is stored and who the participantswere. Separate instances of IM index program 110 exist on each ofcomputer devices 102A, 102B, 102C, and 102D and are represented as IMindex programs 110A, 110B, 110C, and 110D, respectively. IM indexprograms 110A, 110B, 110C, and 110D include user interfaces 112A, 112B,112C, and 112D respectively. User interface 112 receives input from auser (e.g., typed messages, selected options, etc.) and displaysreceived messages to the user. IM index programs 110A, 110B, 110C, and110D also include indexes 114A, 114B, 114C, and 114D respectively. Index114 stores a topic of an IM conversation held between two or moreparticipants. Index 114 is accessible to the computer device it resideson and to a computer device socially connected through a network to thecomputer device it resides on. For example, index 114A on computerdevice 102A is accessible to computer device 102B but is not directlyaccessible to computer devices 102C and 102D. Each index 114 comprises alist of topics corresponding to IM conversations. A user of IM indexprogram 110 can establish security settings to allow only computerdevices meeting specified criteria to access index 114.

FIG. 2 is a flowchart, depicting operational steps for storing andindexing IM conversations, according to an exemplary embodiment of thepresent invention.

In an example, an IM conversation occurs between computer device 102Aand computer device 102B and corresponds to a single topic. A transcriptof the IM conversation may be stored by each participating computerdevice in association with the topic discussed, subsequently allowingthe transcript to be retrieved by someone looking for information on thetopic.

When an IM conversation occurs, IM index program 110, e.g., IM indexprogram 110A and 110B in the above example, determines when the IMconversation has ended (step 202). Responsive to determining the instantmessaging conversation has ended, IM index program 110 determines atleast one topic of the IM conversation (step 204).

In one embodiment, participants of the IM conversation can manuallyspecify a topic of or covered by the conversation. For example, after anIM conversation ends, IM index program 110 may prompt a user, via userinterface 112, to enter the topic.

In another embodiment, determining a topic is done automatically by IMindex program 110. For example, IM index program 110 may have apredetermined list of topics and match at least one of the topics to theIM conversation by identifying one or more key words used in the IMconversation. In yet another embodiment, a word used most frequently inan IM conversation (excluding common articles such as “the,” “an,” “a,”etc.) may be determined to be the topic of the IM conversation.

IM index program 110 determines participants of the IM conversation(step 206). For example, other than the computer device on which IMindex program 110 operates on, at least one other computer deviceparticipates in the conversation. IM index program 110 may determine notonly the user names of the other participants, but also a correspondingIP address for each device a participant is connecting from, andpotentially other contact information (email, phone, etc.). IM indexprogram 110 saves the IM conversation (step 208). More specifically, IMindex program 110 saves a transcript of the IM conversation and theidentified participants of the conversation. IM index program 110indexes the saved IM conversation by the determined topic (step 210).Thus, in the above example, each of computer devices 102A and 102B wouldultimately have a transcript of the IM conversation indexed by thetopic, and each device would reference itself and the other device (orthe user of itself and the user of the other device) as a participant inthe IM conversation.

FIG. 3 is a flowchart, depicting operational steps of obtaining relevantinformation through the use of IM index program 110, in accordance withan embodiment of the present invention. For example, a user of acomputer device, such as computer device 102C, may want to findconversations pertaining to a specified topic from another computerdevice, such as the conversation saved on computer device 102A and 102B.

In a searching scenario, IM index program 110 receives a request from auser that specifies a topic to be searched (step 302). For example, auser can enter the topic through user interface 112. IM index program110 initializes a search for the topic among IM conversation indexes ofcomputer devices that have a social network connection or relationshipwith the computer device hosting IM index program 110 (step 304). Forexample, in an example where a user requests computer device 102C tosearch for a specific topic, IM index program 110C searches indexes ofcomputer device 102B and 102D because both of these devices have asocial network connection with computer device 102C. In a preferredembodiment, the social network connection is that a user of each ofcomputer device 102B and 102C is in a contact list of the instantmessaging program on computer device 102C.

Thus, after initializing the search, IM index program 110 queries acomputer device having a social network connection with the computerdevice hosting IM index program 110 (step 306). IM index program 110determines whether an index of the queried computer device contains thetopic. Upon receiving a notification from the queried computer devicethat an index on the queried computer device contains the searchedtopic, IM index program 110 receives the participants of a conversationcorresponding to the searched topic (step 308). In one embodiment, IMindex program 110 may send a separate query for the participants afteridentifying the topic. In another embodiment, the participants mightautomatically be sent by an instance of IM index program 110 residing onthe queried computer device. In either case, receiving the list ofparticipants facilitates the user that performed the query to contactthe participants of the pertinent conversation, as the participantsmight have a special knowledge of the topic by virtue of theirparticipation in said conversation. In an example, if a user inputs atopic to search for on computer device 102C, computer device 102C mightquery the socially connected computer device 102B. Computer device 102Bmight have an IM conversation indexed by the searched for topic thatoccurred between computer device 102B and computer device 102A. Computerdevice 102C would receive from computer device 102B, the participants(e.g., user names and/or IP addresses, and other potential identifyinginformation or contact information). The user of computer device 102Cmay use this information to directly contact a participant. In oneembodiment, the user may also request the transcript of the IMconversation to learn the actual details of the conversation and/or toconfirm that the IM conversation truly pertains to the topic that wassearched for.

If IM index program 110 does not find the topic in an index of a queriedcomputer device, IM index program 110 may determine another computerdevice to query based on a contact list of the hosting computer device.

Once IM index program 110 receives or identifies participants of aconversation corresponding to the searched topic, IM index program 110stores information indicating that an IM conversation took place betweenthe identified participants and indexes this information by topic (step310). This ability to store, or index, that an IM conversation tookplace between participants, where the computer device storing thisinformation is not a participant, expands the ability of every deviceconnected to this network of computers to identify people with aspecific type of knowledge. For example, in the scenario where computerdevice 102C searches for the topic, had computer device 102D searchedfor the same topic prior to the search by computer device 102C, computerdevice 102D would not have located anyone with potential knowledge ofthe topic. However, subsequent to computer device 102C indexing thatusers of computer device 102A and 102B participated in a conversationrelated to the topic, a search by computer device 102D would locate thetopic on computer device 102C and reveal that computer devices 102A and102B (or users of computer devices 102A and 102B) participated in therelevant conversation. Thus, the user of computer device 102D mightdirectly communicate with any of the participants. Additionally, knowingan original participant of the IM conversation may allow the user ofcomputer device 102D to query either computer device 102A or 102B for atranscript of the IM conversation.

In one embodiment, if a user of a computing device is not or will not beavailable, the computer device might offload, or “push”, the storedindex to a predetermined computer. For example, computer device 102B maypush index 114B, potentially along with the stored IM conversations, tocomputer device 102C. By pushing index 114B to be included in index114C, the topic and the IM conversation would still be available to bediscovered by a user searching for the topic, for example on computerdevice 102D.

In another embodiment of the present invention, if IM index program 110cannot find the topic in an index of a computer device on a contact listof the local computer device, IM index program 110 may direct aninstance of IM index program 110 on a queried computer device to searchfor the topic. The instance of IM index program 110 on the queriedcomputer device, as in normal operation, would begin a query of its owncontacts for the topic, and if found, may return the applicable indexinformation to the querying computer device. In such a fashion, thesearch for a topic may spiral outwardly along social contacts from onecomputer to the next, until the topic is found.

FIG. 4 depicts a block diagram of components of a computer device, suchas computer device 102A, 102B, 102C or 102D, in accordance with anillustrative embodiment of the present invention. It should beappreciated that FIG. 4 provides only an illustration of oneimplementation and does not imply any limitations with regard to theenvironments in which different embodiments may be implemented. Manymodifications to the depicted environment may be made.

Each of computer devices 102A, 102B, 102C and 102D includescommunications fabric 402, which provides communications betweencomputer processor(s) 404, memory 406, persistent storage 408,communications unit 410, and input/output (I/O) interface(s) 412.Communications fabric 402 can be implemented with any architecturedesigned for passing data and/or control information between processors(such as microprocessors, communications and network processors, etc.),system memory, peripheral devices, and any other hardware componentswithin a system. For example, communications fabric 402 can beimplemented with one or more buses.

Memory 406 and persistent storage 408 are computer-readable storagemedia. In this embodiment, memory 406 includes random access memory(RAM) 414 and cache memory 416. In general, memory 406 can include anysuitable volatile or non-volatile computer-readable storage media.

IM index program 110 is stored in persistent storage 408 for executionby one or more of the respective computer processors 404 via one or morememories of memory 406. In this embodiment, persistent storage 408includes a magnetic hard disk drive. Alternatively, or in addition to amagnetic hard disk drive, persistent storage 408 can include a solidstate hard drive, a semiconductor storage device, read-only memory(ROM), erasable programmable read-only memory (EPROM), flash memory, orany other computer-readable storage media that is capable of storingprogram instructions or digital information.

The media used by persistent storage 408 may also be removable. Forexample, a removable hard drive may be used for persistent storage 408.Other examples include optical and magnetic disks, thumb drives, andsmart cards that are inserted into a drive for transfer onto anothercomputer-readable storage medium that is also part of persistent storage408.

Communications unit 410, in these examples, provides for communicationswith other data processing systems or devices. In these examples,communications unit 410 includes one or more network interface cards.Communications unit 410 may provide communications through the use ofeither or both physical and wireless communications links. IM indexprogram 110 may be downloaded to persistent storage 408 throughcommunications unit 410.

I/O interface(s) 412 allows for input and output of data with otherdevices that may be connected to one of the computer devices 102A, 1028,102C and 102D. For example, I/O interface 412 may provide a connectionto external devices 418 such as a keyboard, keypad, a touch screen,and/or some other suitable input device. External devices 418 can alsoinclude portable computer-readable storage media such as, for example,thumb drives, portable optical or magnetic disks, and memory cards.Software and data used to practice embodiments of the present invention,e.g., IM index program 110, can be stored on such portablecomputer-readable storage media and can be loaded onto persistentstorage 408 via I/O interface(s) 412. I/O interface(s) 412 also connectto a display 420.

Display 420 provides a mechanism to display data to a user and may be,for example, a computer monitor.

The programs described herein are identified based upon the applicationfor which they are implemented in a specific embodiment of theinvention. However, it should be appreciated that any particular programnomenclature herein is used merely for convenience, and thus theinvention should not be limited to use solely in any specificapplication identified and/or implied by such nomenclature.

The flowchart and block diagrams in the Figures illustrate thearchitecture, functionality, and operation of possible implementationsof systems, methods and computer program products according to variousembodiments of the present invention. In this regard, each block in theflowchart or block diagrams may represent a module, segment, or portionof code, which comprises one or more executable instructions forimplementing the specified logical function(s). It should also be notedthat, in some alternative implementations, the functions noted in theblock may occur out of the order noted in the figures. For example, twoblocks shown in succession may, in fact, be executed substantiallyconcurrently, or the blocks may sometimes be executed in the reverseorder, depending upon the functionality involved. It will also be notedthat each block of the block diagrams and/or flowchart illustration, andcombinations of blocks in the block diagrams and/or flowchartillustration, can be implemented by special purpose hardware-basedsystems that perform the specified functions or acts, or combinations ofspecial purpose hardware and computer instructions.

What's claimed is:
 1. A method comprising: indexing a transcript of achat session within a memory location, the transcript of the chatsession comprising one or more keywords; determining a topic of the chatsession based on the one or more keywords; receiving a search requestthat identifies the topic of the chat session from a client device; andcausing display of a presentation of the transcript of the chat sessionat the client device responsive to the search request.
 2. The method ofclaim 1, wherein the determining the topic of the chat session based onthe one or more keywords includes: determining a respective wordincidence count for each word among the one or more keywords; anddetermining the topic based on the respective word incidence count foreach of the one or more keywords.
 3. The method of claim 2, wherein thedetermining the topic based on the respective word incidence countincludes: identifying a most common word among the one or more keywordsbased on the word incidence count; and selecting the most common word asthe topic.
 4. The method of claim 1, wherein the determining the topicbased on the one or more keywords includes: accessing a repository thatcomprises a predetermined list of keywords; identifying the one or morekeywords of the transcript of the chat session from among thepredetermined list of topics; and determining the topic based on the oneor more keywords.
 5. The method of claim 1, wherein the memory locationcorresponds with a first client device, the client device is a secondclient device, and the causing display of the presentation of thetranscript of the chat session at the second client device responsive tothe search request includes: identifying a social network connectionbetween a first user account associated with the first client device anda second user account associated with the second client device; andaccessing the memory location of the first client device based on thesocial network connection between the first user account and the seconduser account.
 6. The method of claim 1, wherein the indexing thetranscript of the chat session within the memory location includes:detecting a conclusion of the chat session; generating the transcript ofthe chat session responsive to the conclusion of the chat session; andindexing the transcript of the chat session at the memory location. 7.The method of claim 1, wherein the indexing the transcript of the chatsession includes: receiving a user input that comprises a selection ofat least a portion of the one or more keywords; and indexing thetranscript of the chat session at the memory location based on the userinput that comprises the selection of the portion of the one or morekeywords.
 8. A system comprising: a memory; and at least one hardwareprocessor coupled to the memory and comprising instructions that causesthe system to perform operations comprising: indexing a transcript of achat session within a memory location, the transcript of the chatsession comprising one or more keywords; determining a topic of the chatsession based on the one or more keywords; receiving a search requestthat identifies the topic of the chat session from a client device; andcausing display of a presentation of the transcript of the chat sessionat the client device responsive to the search request.
 9. The system ofclaim 8, wherein the determining the topic of the chat session based onthe one or more keywords includes: determining a respective wordincidence count for each word among the one or more keywords; anddetermining the topic based on the respective word incidence count foreach of the one or more keywords.
 10. The system of claim 9, wherein thedetermining the topic based on the respective word incidence countincludes: identifying a most common word among the one or more keywordsbased on the word incidence count; and selecting the most common word asthe topic.
 11. The system of claim 8, wherein the determining the topicbased on the one or more keywords includes: accessing a repository thatcomprises a predetermined list of keywords; identifying the one or morekeywords of the transcript of the chat session from among thepredetermined list of topics; and determining the topic based on the oneor more keywords.
 12. The system of claim 8, wherein the memory locationcorresponds with a first client device, the client device is a secondclient device, and the causing display of the presentation of thetranscript of the chat session at the second client device responsive tothe search request includes: identifying a social network connectionbetween a first user account associated with the first client device anda second user account associated with the second client device; andaccessing the memory location of the first client device based on thesocial network connection between the first user account and the seconduser account.
 13. The system of claim 8, wherein the indexing thetranscript of the chat session within the memory location includes:detecting a conclusion of the chat session; generating the transcript ofthe chat session responsive to the conclusion of the chat session; andindexing the transcript of the chat session at the memory location. 14.The system of claim 8, wherein the indexing the transcript of the chatsession includes: receiving a user input that comprises a selection ofat least a portion of the one or more keywords; and indexing thetranscript of the chat session at the memory location based on the userinput that comprises the selection of the portion of the one or morekeywords.
 15. A non-transitory machine-readable storage mediumcomprising instructions that, when executed by one or more processors ofa machine, cause the machine to perform operations including: indexing atranscript of a chat session within a memory location, the transcript ofthe chat session comprising one or more keywords; determining a topic ofthe chat session based on the one or more keywords; receiving a searchrequest that identifies the topic of the chat session from a clientdevice; and causing display of a presentation of the transcript of thechat session at the client device responsive to the search request. 16.The non-transitory machine-readable storage medium of claim 15, whereinthe determining the topic of the chat session based on the one or morekeywords includes: determining a respective word incidence count foreach word among the one or more keywords; and determining the topicbased on the respective word incidence count for each of the one or morekeywords.
 17. The non-transitory machine-readable storage medium ofclaim 16, wherein the determining the topic based on the respective wordincidence count includes: identifying a most common word among the oneor more keywords based on the word incidence count; and selecting themost common word as the topic.
 18. The non-transitory machine-readablestorage medium of claim 15, wherein the determining the topic based onthe one or more keywords includes: accessing a repository that comprisesa predetermined list of keywords; identifying the one or more keywordsof the transcript of the chat session from among the predetermined listof topics; and determining the topic based on the one or more keywords.19. The non-transitory machine-readable storage medium of claim 15,wherein the memory location corresponds with a first client device, theclient device is a second client device, and the causing display of thepresentation of the transcript of the chat session at the second clientdevice responsive to the search request includes: identifying a socialnetwork connection between a first user account associated with thefirst client device and a second user account associated with the secondclient device; and accessing the memory location of the first clientdevice based on the social network connection between the first useraccount and the second user account.
 20. The non-transitorymachine-readable storage medium of claim 15, wherein the indexing thetranscript of the chat session within the memory location includes:detecting a conclusion of the chat session; generating the transcript ofthe chat session responsive to the conclusion of the chat session; andindexing the transcript of the chat session at the memory location.